Question

simplify.
$(-7 + 6i) + (-5 - 9i)$
write your answer in the form $a + bi$.

Explanation:

Step1: Group real and imaginary parts

$(-7 + (-5)) + (6i + (-9i))$

Step2: Calculate real part sum

$-7 - 5 = -12$

Step3: Calculate imaginary part sum

$6i - 9i = -3i$

Step4: Combine results

$-12 + (-3i)$

Answer:

$-12 - 3i$